A landlord refuses to rent to a single father due to concerns about parenting. Which protected class is being violated?

The correct answer is familial status. This protected class refers to individuals who have children under the age of 18 living with them. The Fair Housing Act prohibits discrimination in housing based on familial status, which includes families with children, including single parents. In this scenario, the landlord’s refusal to rent to a single father based on concerns about his parenting directly relates to his status as a parent, indicating that such discrimination is a violation of the law.

Gender, race, and disability are also important protected classes under fair housing laws, but they do not specifically address the situation of a landlord refusing to rent based on the presence of children or the parenting of a single father. Thus, the correct answer highlights the specific nature of the discrimination related to familial status.